package reflect;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Scanner;

/**
 * 使用反射机制调用方法
 */

public class ReflectDemo4 {
    public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException, NoSuchMethodException, InvocationTargetException {
        Person p = new Person();
        p.sayHello();

        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入类名");
        String className = scanner.nextLine();
        System.out.println("请输入方法名");
        String methodName = scanner.nextLine();
        //实例化
//        Class cls=Class.forName("reflect.Person");
        Class cls=Class.forName(className);
        Object obj=cls.newInstance();
        //调用方法
        //1获取待调用方法的方法对象
//        Method method= cls.getMethod("sayHello");//至少要传入方法名
        Method method=cls.getMethod(methodName);
        //2通过方法对象来调用此方法
        method.invoke(obj);
    }
}
